Separation of Alcohols by Thin-Layer Chromatography on Activated Bleaching Earth

Separation of Cholesterol and Demosterol by Thin-layer Chromatography.

Strategies of sunscreen separation by thin layer chromatography.

So far sunscreens separation has been achieved primarily by HPLC or TLC on RP-18 or (less frequently) unmodified silica gel as stationary phase. The conditions of chromatographic separation published so far are not suitable for many combinations of UV filters found commonly in cosmetic products. It is therefore reasonable to seek alternative conditions that would make it possible to separate th...

Separation of plasma lipids by thin-layer chromatography.

A rapid comprehensive thin-layer chromatographic separation of the major plasma lipid classes on commercial silicic acid glass fiber paper is described. For screening purposes, oxidized fractions are rapidly visualized for qualitative interpretation. Standard colorimetric procedures for each lipid class are per­ formed upon the migration areas cut from the strips. This provides quantitative mea...

Sodium Deoxycholate Micelles Activated Separation of Coexisting Five- nucleobases by High-performance Thin-layer Chromatography

High-performance thin-layer chromatography (HPTLC) is well suited to the separation of nucleobases. Most of reports on this topic are limited to the use of PEI-cellulose, ODS (octadecyl silica), and silica gel as layer materials (Randerath and Struck, 1961; Bij and Lederer, 1983; Steinberg et al., 1996). Chiral plates have also been used for separation of nucleobases, and enantiomers (Hatzack a...

The Effect of Different Concentrations of Activated Carbon with Bleaching Earth During Bleaching Process on Physicochemical Properties of Soybean Oil

Considering the importance of bleaching earth with activated carbon in reduction of impurities in vegetable oils, this study was conducted to investigate the effects of bleaching process on physicochemical properties of the bleached soybean oil. The bleaching process was carried out with bleaching earth (1 % w/w) containing different concentrations of activated carbon (0.1 % up to 0.5 % w/w). T...